Hello,
I have 80mm gap between my rafters and would like to use the Rockwool sound insulation, as this is the 100mm I am planning on cutting it down to 30mm (i've been told I can) and place it between the rafter.
www.selcobw.com
I'm not to sure about both of my neighbours walls, I would like some insulation there but some sound deadening too. I have already made a frame using 2x4s, can I use the same sound insulation or would I have to do anything different?
Edit. Also, if I'm using 30mm Rockwool between the rafters I assume I should be using something thinner outside (on top) of the rafters. If so, can i use a 50mm between the rafters and 30mm outside? or even 40mm between the rafters and 25/30mm outside.
I have 80mm gap between my rafters and would like to use the Rockwool sound insulation, as this is the 100mm I am planning on cutting it down to 30mm (i've been told I can) and place it between the rafter.
![www.selcobw.com](https://www.selcobw.com/media/catalog/product/cache/f58ad71aaf8170932de3c960fd3e55f0/4/8/487320133_01_v29.jpg)
Rockwool Sound Insulation Slab 1200 x 400 x 100mm Covers 2.88m²
Buy Rockwool Sound Insulation Slab 1200 x 400 x 100mm Covers 2.88m² at trade exclusive prices. Shop online with Click & Collect and next day delivery available.
![www.selcobw.com](https://www.selcobw.com/static/icons/favicon-16x16.png)
I'm not to sure about both of my neighbours walls, I would like some insulation there but some sound deadening too. I have already made a frame using 2x4s, can I use the same sound insulation or would I have to do anything different?
Edit. Also, if I'm using 30mm Rockwool between the rafters I assume I should be using something thinner outside (on top) of the rafters. If so, can i use a 50mm between the rafters and 30mm outside? or even 40mm between the rafters and 25/30mm outside.
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